Watch-case



(No Model.) F. EPHRAIM.

Watch Case.

No. 233,405. Patented Oct. 19,1880.

Jig. g.

MPETERS, FHOTO LYHOGRA WASHKNGTOI D C '25 Figure l is a view of mydevice.

UNITED STATES PATENT OFFICE.

FERDINAND EPHRAIM, OF BODIE, CALIFORNIA.

WATCH-CASE. 1

SPECIFICATION forming part of Letters Patent No. 233,405, dated October19, 1880.

Application filed August 9, 1880.

To all whom it may concern:

Be it known that I, FERDINAND EPHRAIM, of Bodie, county of Mono, andState of California, have invented a Dust- Protector for 5 WatchCases;and I hereby declare the following to be a full, clear, and exactdescription thereof.

My invention relates to an improved construction of watch-cases by whichdust and moisture may be prevented from entering the case and injuringthe works of the watch. Much damage is done in a very short time towatches carried by persons engaged in occupations where there is muchdust by fine particles of dirt, which get between the cases andgradually reach the operative parts of valuable watches, and in a shorttime destroy the usefulness of the time-piece.

My invention consists in making the rim to which the cases are hinged sothat a groove is formed around the periphery of the cases outside, andthis arrests the dirt and prevents it entering the watch.

Referring to the accompanying drawings,

Fig. 2 is an edge view.

A represents the rim of a watch-case. B B

are the outside cases, and O is my dust-cover. This dust-cover is formedof a single strip of (No model.)

metal secured around theperiphery of the rim 0 A in shape of a flat ringor band, and it extends on each side of the rim far enough to cover thecrevice between the cases and the rim when the cases are closed, so asto prevent the entrance of dirt or dust when the cases are closed.

In manufacturing watch-cases the part 0 will form a part of the rim A,the whole being made from solid material; but it will be seen that I canattach the dust-cover to watches now in use by forming a separate bandand afterward securing it around the periphery.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

A dust-protector for watch-cases consisting of the flat rim or band C,surrounding the rim of the watch and forming flanges which project abovethe edges of the cases B B, substantially as and for the purpose hereindescribed.

In witness whereof I have hereunto set my hand.

FERDINAND EPHRAIM.

Witnesses:

R. L. PETERSON, Lnwrs SCHOENS.

